Engadget: Been awhile, hasn't it Freecom? The same company responsible for serving up the world's first portable USB 3.0 hard drive is now responsible for cranking out the world's slimmest portable HDD. At just ten millimeters thick, the Mobile Drive Mg is likely thinner than your average ink pen, touting a magnesium enclosure and a USB 3.0 port, enabling it to shoot data back and forth at rates as high as 130MB/sec.